Amazon has patented a drone that reacts to people shouting and waving at it

It's not secret Amazon wants to leverage drones to help deliver packages. A recent patent might shed light on how the process could work. Amazon earned a patent from the U.S. Patent and Trademark Office for a drone system allowing the vehicle to react when someone waves their hands or shouts. The patent was first spotted by tech site Geekwire. When a drone recognizes a human gesture through one of its sensors, it will process it against a database of gestures then respond accordingly.